com.trolltech.qt.gui
Class QDropEvent

java.lang.Object
  extended by com.trolltech.qt.internal.QSignalEmitterInternal
      extended by com.trolltech.qt.QSignalEmitter
          extended by com.trolltech.qt.QtJambiObject
              extended by com.trolltech.qt.core.QEvent
                  extended by com.trolltech.qt.gui.QDropEvent
All Implemented Interfaces:
QtJambiInterface
Direct Known Subclasses:
QDragMoveEvent

public class QDropEvent
extends QEvent

The QDropEvent class provides an event which is sent when a drag and drop action is completed. When a widget accepts drop events, it will receive this event if it has accepted the most recent QDragEnterEvent or QDragMoveEvent sent to it.

The drop event contains a proposed action, available from proposedAction(), for the widget to either accept or ignore. If the action can be handled by the widget, you should call the acceptProposedAction() function. Since the proposed action can be a combination of Qt::DropAction values, it may be useful to either select one of these values as a default action or ask the user to select their preferred action.

If the proposed drop action is not suitable, perhaps because your custom widget does not support that action, you can replace it with any of the possible drop actions by calling setDropAction() with your preferred action. If you set a value that is not present in the bitwise OR combination of values returned by possibleActions(), the default copy action will be used. Once a replacement drop action has been set, call accept() instead of acceptProposedAction() to complete the drop operation.

The mimeData() function provides the data dropped on the widget in a QMimeData object. This contains information about the MIME type of the data in addition to the data itself.

See also:
QMimeData, QDrag, and Drag and Drop.


Nested Class Summary
 
Nested classes/interfaces inherited from class com.trolltech.qt.core.QEvent
QEvent.Type
 
Nested classes/interfaces inherited from class com.trolltech.qt.QSignalEmitter
QSignalEmitter.AbstractSignal, QSignalEmitter.PrivateSignal0, QSignalEmitter.PrivateSignal1, QSignalEmitter.PrivateSignal2, QSignalEmitter.PrivateSignal3, QSignalEmitter.PrivateSignal4, QSignalEmitter.PrivateSignal5, QSignalEmitter.PrivateSignal6, QSignalEmitter.PrivateSignal7, QSignalEmitter.PrivateSignal8, QSignalEmitter.PrivateSignal9, QSignalEmitter.Signal0, QSignalEmitter.Signal1, QSignalEmitter.Signal2, QSignalEmitter.Signal3, QSignalEmitter.Signal4, QSignalEmitter.Signal5, QSignalEmitter.Signal6, QSignalEmitter.Signal7, QSignalEmitter.Signal8, QSignalEmitter.Signal9
 
Nested classes/interfaces inherited from class com.trolltech.qt.internal.QSignalEmitterInternal
com.trolltech.qt.internal.QSignalEmitterInternal.AbstractSignalInternal
 
Field Summary
 
Fields inherited from class com.trolltech.qt.internal.QSignalEmitterInternal
currentSender
 
Constructor Summary
QDropEvent(QPoint pos, Qt.DropActions actions, QMimeData data, Qt.MouseButtons buttons, Qt.KeyboardModifiers modifiers)
          Constructs a drop event of a certain type corresponding to a drop at the point specified by pos in the destination widget's coordinate system.
QDropEvent(QPoint pos, Qt.DropActions actions, QMimeData data, Qt.MouseButtons buttons, Qt.KeyboardModifiers modifiers, QEvent.Type type)
          Constructs a drop event of a certain type corresponding to a drop at the point specified by pos in the destination widget's coordinate system.
 
Method Summary
 void acceptProposedAction()
          Sets the drop action to be the proposed action.
protected  Qt.DropActions act()
           
protected  Qt.DropAction default_action()
           
protected  Qt.DropAction drop_action()
           
 Qt.DropAction dropAction()
          Returns the action to be performed on the data by the target.
 Qt.KeyboardModifiers keyboardModifiers()
          Returns the modifier keys that are pressed.
protected  QMimeData mdata()
           
 QMimeData mimeData()
          Returns the data that was dropped on the widget and its associated MIME type information.
protected  Qt.KeyboardModifiers modState()
           
 Qt.MouseButtons mouseButtons()
          Returns the mouse buttons that are pressed.
protected  Qt.MouseButtons mouseState()
           
protected  QPoint p()
           
 QPoint pos()
          Returns the position where the drop was made.
 Qt.DropActions possibleActions()
          Returns an OR-combination of possible drop actions.
 Qt.DropAction proposedAction()
          Returns the proposed drop action.
protected  void setAct(Qt.DropAction[] act)
           
protected  void setAct(Qt.DropActions act)
           
protected  void setDefault_action(Qt.DropAction default_action)
           
protected  void setDrop_action(Qt.DropAction drop_action)
           
 void setDropAction(Qt.DropAction action)
          Sets the action to be performed on the data by the target.
protected  void setModState(Qt.KeyboardModifier[] modState)
           
protected  void setModState(Qt.KeyboardModifiers modState)
           
protected  void setMouseState(Qt.MouseButton[] mouseState)
           
protected  void setMouseState(Qt.MouseButtons mouseState)
           
protected  void setP(QPoint p)
           
 QWidget source()
          If the source of the drag operation is a widget in this application, this function returns that source; otherwise it returns 0.
 java.lang.String toString()
          Returns a string representation of the this QDropEvent.
 
Methods inherited from class com.trolltech.qt.core.QEvent
accept, ignore, isAccepted, registerEventType, registerEventType, setAccepted, setT, spontaneous, t, type
 
Methods inherited from class com.trolltech.qt.QtJambiObject
dispose, disposed, equals, finalize, reassignNativeResources, tr, tr, tr
 
Methods inherited from class com.trolltech.qt.QSignalEmitter
blockSignals, disconnect, disconnect, signalsBlocked, signalSender, thread
 
Methods inherited from class com.trolltech.qt.internal.QSignalEmitterInternal
__qt_signalInitialization
 
Methods inherited from class java.lang.Object
clone, getClass, hashCode, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface com.trolltech.qt.QtJambiInterface
disableGarbageCollection, nativeId, nativePointer, reenableGarbageCollection, setJavaOwnership
 

Constructor Detail

QDropEvent

public QDropEvent(QPoint pos,
                  Qt.DropActions actions,
                  QMimeData data,
                  Qt.MouseButtons buttons,
                  Qt.KeyboardModifiers modifiers)
Constructs a drop event of a certain type corresponding to a drop at the point specified by pos in the destination widget's coordinate system.

The actions indicate which types of drag and drop operation can be performed, and the drag data is stored as MIME-encoded data in data.

The states of the mouse buttons and keyboard modifiers at the time of the drop are specified by buttons and modifiers.


QDropEvent

public QDropEvent(QPoint pos,
                  Qt.DropActions actions,
                  QMimeData data,
                  Qt.MouseButtons buttons,
                  Qt.KeyboardModifiers modifiers,
                  QEvent.Type type)
Constructs a drop event of a certain type corresponding to a drop at the point specified by pos in the destination widget's coordinate system.

The actions indicate which types of drag and drop operation can be performed, and the drag data is stored as MIME-encoded data in data.

The states of the mouse buttons and keyboard modifiers at the time of the drop are specified by buttons and modifiers.

Method Detail

acceptProposedAction

public final void acceptProposedAction()
Sets the drop action to be the proposed action.

See also:
setDropAction(), proposedAction(), and accept().


dropAction

public final Qt.DropAction dropAction()
Returns the action to be performed on the data by the target. This may be different from the action supplied in proposedAction() if you have called setDropAction() to explicitly choose a drop action.

See also:
setDropAction().


keyboardModifiers

public final Qt.KeyboardModifiers keyboardModifiers()
Returns the modifier keys that are pressed.


mimeData

public final QMimeData mimeData()
Returns the data that was dropped on the widget and its associated MIME type information.


mouseButtons

public final Qt.MouseButtons mouseButtons()
Returns the mouse buttons that are pressed.


pos

public final QPoint pos()
Returns the position where the drop was made.


possibleActions

public final Qt.DropActions possibleActions()
Returns an OR-combination of possible drop actions.

See also:
dropAction().


proposedAction

public final Qt.DropAction proposedAction()
Returns the proposed drop action.

See also:
dropAction().


setDropAction

public final void setDropAction(Qt.DropAction action)
Sets the action to be performed on the data by the target. Use this to override the proposed action with one of the possible actions.

If you set a drop action that is not one of the possible actions, the drag and drop operation will default to a copy operation.

Once you have supplied a replacement drop action, call accept() instead of acceptProposedAction().

See also:
dropAction().


source

public final QWidget source()
If the source of the drag operation is a widget in this application, this function returns that source; otherwise it returns 0. The source of the operation is the first parameter to the QDrag object used instantiate the drag.

This is useful if your widget needs special behavior when dragging to itself.

See also:
QDrag::QDrag().


mdata

protected final QMimeData mdata()

setDefault_action

protected final void setDefault_action(Qt.DropAction default_action)

default_action

protected final Qt.DropAction default_action()

setModState

protected final void setModState(Qt.KeyboardModifier[] modState)

setModState

protected final void setModState(Qt.KeyboardModifiers modState)

modState

protected final Qt.KeyboardModifiers modState()

setMouseState

protected final void setMouseState(Qt.MouseButton[] mouseState)

setMouseState

protected final void setMouseState(Qt.MouseButtons mouseState)

mouseState

protected final Qt.MouseButtons mouseState()

setDrop_action

protected final void setDrop_action(Qt.DropAction drop_action)

drop_action

protected final Qt.DropAction drop_action()

setP

protected final void setP(QPoint p)

p

protected final QPoint p()

setAct

protected final void setAct(Qt.DropAction[] act)

setAct

protected final void setAct(Qt.DropActions act)

act

protected final Qt.DropActions act()

toString

public java.lang.String toString()
Returns a string representation of the this QDropEvent.

Overrides:
toString in class QEvent